Scienece key temers Flashcards
electrons
negatively charged particles in an atom
Nucleus
The center of an atom
Isotope
atoms with a different no of pro’s and neu’s
atomic number
no of protos
neutron
a particle with no charge in an atom
reactivity
the ease and speed that an element reacts at
Malleable
an elements ability to be hammered or rolled into a sheet
gamma radiation
High-energy waves that do not cause a change in atomic mass or number.
conductivity
ability of an element to transfer heat or electricity
Ductile
the ability of an element to be pulled out or drawn into a long wire
Tracer
a radioactive isotope that can be fllowed through the steps of a chemical reaction
Group
column
period
horizontal line
plasma
a gas-like mixture of free electrons and nuclei of atoms stripped of electrons
Nuclear fusion
two nuclei combining into a larger one and releasing huge amounts of energy
